RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2017, Vol. 26 >> Issue (12): 2120-.doi: 10.11870/cjlyzyyhj201712021

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BEHAVIORAL AND SURVIVAL CHARACTERISTICS OF FOULING#br#  ORGANISMS Limnoperna fortunei IN DIFFERENT EUTROPHIC STATUS

TAN Qianru1, LIU Defu1,2, ZHANG Jialei1,YOU ruoyin1,WEI Xiaoxi1,GONG Dandan1,2   

  1. (1. School of Civil Engineering,Architecture and Environment,Key laboratory of Hubei Province for lake Ecological Restoration
    and Algae in the laboratory,Hubei University of Technology, Wuhan 430068,China;2.Engineering Research Center of
    Ecoenvironment in Three Gorges Reservoir Region,Ministry of Education，College of Hydraulic and
    Environmental Engineering, China Three Gorges University, Yichang 443002,China)
  • Online:2017-12-20

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Abstract: To elucidate characteristic of existence, movement and adhesion of Limnoperna fortunei in different eutrophic states were conducted using laboratory control experiment.(1) The results indicated that the Oligotrophic state were not suitable for the adhesion of Limnoperna fortunei, but Oligotrophic state were suitabled for Limnoperna fortunei’s survival, so Limnoperna fortunei moved the shortest distance. Mesotrophic state were suitabled for survival of Limnoperna fortunei. The eutrophic state were not suitabled for the survival of Limnoperna fortunei, so Limnoperna fortunei moved the farthest distance.(2) The lower nutrient concentrations belong to eutrophic state were suitabled for survive of Limnoperna fortunei. The higher the concentrations of nutrient, the less were suitabled for adhesion of Limnoperna fortunei. The lower nutrient concentrations belong to eutrophic state were suitabled for adhere of Limnoperna fortunei.(3) The lower phytoplankton concentrations belong to dystrophic state were suitabled for survive of Limnoperna fortunei. The higher the phytoplankton concentrations, the less were suitabled for survival of Limnoperna fortunei. The higher the concentrations of phytoplankton, the less were suitabled for adhesion of Limnoperna fortunei. The lower phytoplankton concentrations were suitabled for adhere of Limnoperna fortunei. The lower concentrations of phytoplankton were suitabled for survival of Limnoperna fortunei, so it moved the shortest distance. The higher concentrations of phytoplankton were not suitabled for survival of Limnoperna fortunei, so it moved the farthest distance. The results indicated the degree of eutrophication were the key regulatory factors for existence, movement and adhesion of Limnoperna fortunei. The lowereutrophic state were suitabled for existence and adhesion of Limnoperna fortunei. The concentrations of nutrient and phytoplankton played governing roles for existence and adhesion of Limnoperna fortunei. The lower concentrations of nutrient and phytoplankton belong to dystrophic state were suitabled for existence and adhesion of Limnoperna fortunei.

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